marine mammals

Explains how and why whales live without much sleep and examines the strange abilities of other animals.

Photographs and easy-to-follow text describe the different types of mammals that live in the world's seas, including dolphins, seals, and whales.

Studies the factors that are putting marine mammals in danger and discusses how scientists, government agencies, and volunteers are trying to track down offenders and prevent marine mammals from becoming extinct.

Discusses the creatures that depend on our planet's ocean ecosystems, the efforts being made to save endangered species of the oceans from overfishing, contamination, and global warming, and makes suggestions on how to contribute to conservation efforts.

Describes such sea mammals as the sea otter, seal, blue whale, and dolphin.

Describes the evolution, characteristics, habitats, behavior, and young of seals, walruses, whales, dolphins, manatees, dugongs, and other mammals of the sea.

Presents an introduction to the physical characteristics, behavior and habitats of sea mammals, including seals, dolphins, whales, and sea cows.

Describes a number of aquatic mammals including whales, dolphins, polar bears, and seals, and how they are able to survive in the world's oceans.

Questions and answers explore the world of pinnipeds, with an emphasis on seals.

Illustrations and text describe the background, lifestyles, and interesting features of seals, whales, sirenians, and those that live on the edge of the sea, such as polar bears and marine otters.